12″ / 300 mm
Nominal diameter
28 Hz
Resonance
0.54
Q factor
86 dB
Sensitivity
± 16 mm
Linear excursion
750 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.4
dB
Frequency response
28 - 200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
28.0
Hz
Mechanical quality factor
QMS
6.87
Electrical quality factor
QES
0.58
Total quality factor
QTS
0.54
Large signal parameters
Maximum linear excursion
xmax
16.0
mm
Air volume displaced at xmax
VD
816
cm³
Power handling
P
250
W
Program power
Pmax
750
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz, estimated)
LE
1.0
mH
Magnet
Force factor
Bl
12.8
N/A
Motor constant
Bl/√RE
7.16
N/√W
Diaphragm
Effective diameter
255
mm
Effective area
SD
510
cm²
Moving mass
MMS
164
g
Moving mass (without air load)
MMD
156
g
Suspensions
Stiffness
KMS
5.38
N/mm
Compliance
CMS
186
µm/N
Equivalent volume to the compliance
VAS
68
L
Mechanical resistance
RMS
4.2
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Volume occupied by the driver (estimated)
2.3
L
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to MTX Audio RT12-04
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12.25″Subwoofer
fS
29 Hz
SD
488 cm²
29 - 300 Hz
QTS
0.57
xmax
11.5 mm
SPL1W
86 dB
Bl/√RE
7.16
Pmax
500 W
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Cerwin Vega H4124D2 x 4 Ω
12″Subwoofer
fS
28 Hz
SD
490 cm²
QTS
0.50
xmax
14.0 mm
SPL1W
87 dB
Bl/√RE
6.76
Pmax
500 W